JSPM – linq-es2015@2.1.4

Package Exports

linq-es2015

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (linq-es2015) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Language-Integrated Query (LINQ)

This library is a set of features that extends powerful query capabilities to any JavaScript based language. It is a complete implementation of LINQ (Language-Integrated Query) pattern.

The library is a continuous effort to implement LINQ using latest features of TypeScript and JavaScript languages (For ES5 compatible library look at linq-es5 branch). The library is implemented in TypeScript and transpiled into JavaScript. It is distributed as a native node module. Browserified and minified standalone UMD modules are located in ./dist directory and could be used directly in compatible browsers. This library uses latest ECMAScript 2015 language specification and utilizes Iterables: ( [System.iterator] ), JavaScript generators (function*), and for of loops. All relevant methods are implemented with deferred execution so no unnecessary iterations are performed. The code is backwards compatible with linq-es5 and C# implementations.

Installation

npm install linq-es2015

Using

import {asEnumerable, Range} from "linq-es2015";


var count =  asEnumerable( [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] ).Where(a => a % 2 == 1)
                                                            .Count()

var iterable = asEnumerable(people)
               .GroupJoin(pets,
                          person => person, 
                          pet => pet.Owner,
                          (person, petCollection) => {
                              return {
                                  Owner: person.Name,
                                  Pets: asEnumerable(petCollection)
                                       .Select(pet=> pet.Name)
                                       .ToArray()
                              };
                          });

For live examples please follow links to (Node) or (Browser).

Naming Convention

When library is used in TypeScript method names follow original C# convention (Name starts with capital letter). It is done for compatibility reasons so that code could be cut/pasted from C# with just minor reformatting. If used directly in JavaScript names follow camelCase notation.

linq-es2015